KR100287653B1 - Multi-network communication method - Google Patents

Abstract

The present invention relates to a multi-network communication method for remote communication in an environment including a plurality of different telecommunication networks using a multi-network terminal intended for communication in various telecommunication networks. The present invention is characterized in that the multi-network terminal 25 detects a telecommunication network that is accessed by itself. Based on the predetermined decision criteria, the multi-network terminal determines for itself which accessible telecommunication networks are communicating. The invention also relates to a multi-network terminal having network switching means and control unit 32 controlled by a control unit for activation of communication devices 30, 31 in a selected telecommunication network.

Description

[Name of invention]

Multi-network communication method

[Technical Field]

The present invention relates to remote communication in a multi-network environment for use in coordination with one same terminal or multiple accessible individual terminals. The present invention provides a user with access to communication services of various networks in a single form.

The terms used in this document are defined as follows.

[Mobile Terminal / Mobile Network]

The network includes a fixed infrastructure and, in particular, includes a number of fixed stations that provide the mobile terminal with access to the mobile network by wireless communication. Fixed stations are geographically distributed across metropolitan area networks (MANs) or geographically over wide area networks (WANs). Examples of mobile networks include mobile data networks, mobile data such as mobitex. The mobile terminal can move freely throughout the wide area network covered by the mobile network.

[Codeless Terminal / Fixed Network]

The network has a fixed infrastructure and in particular comprises a number of fixed nodes interconnected via the medium of wires or other conductor means. Cordless terminals have access from the access point to the fixed network. Examples of fixed networks include telephone networks such as datapacks, teletex, videotex and datel, telex networks, circuit switched data networks, packet switched networks. The cordless terminal is connected to a base unit connected to an access point by a "virtual cable". The virtual cable is implemented as a device that communicates wirelessly, infraredly or ultrasonically. The cordless terminal may move locally around the access point. Thus, the cordless terminal may move alone within a small island defined by the area covered by the base unit, but not within the fixed network formed by the node.

Access points, usually jacks, typically jacks are individual access points or public access points. Individual access points are for cordless terminals of individual users, for example cordless telephones. Public access points, referred to as shared access points, are common to several codeless terminals belonging to different users. Multiple public access points together form a local area network (LAN). Examples of common cordless access points include commercial cordless and wireless LANs.

Background Technology

Different types of telecommunication networks are known in the art. Conventional telephone networks provide telephone service. Telex network provides telex communication service. The circuit switched data network provides a data communication service, and the paging network provides a paging service. Conventional telecommunications networks can be used as carriers of other services such as, for example, telex and data transmission. Packet-switched networks can be carriers of different services, such as data packs, teletex, videotex and datatel. Traffic in one network is adapted to communicate with a destination in another network by introducing a gateway or port into the network. ISDN (Intergrated Services Digital Natwork) is an integrated service network that can provide some of the services mentioned above. The subscriber connects all of their equipment to the same "wire pair" in the ISDN.

The user will use different equipment, commonly referred to as terminals, and different procedures to have access to different networks. The function of the terminal allows the user to use the services of the network. A given terminal has an interaction function with a given network, an interaction function with a user, and a function of adjusting the action of the terminal to the user and the action of the terminal to the network. The user's interaction with the terminal is different and depends on the network to which the terminal has access. This means that the user must be familiar with the access procedure for each network to which he wishes to communicate via his different terminals. This means that one access procedure is used when actually making a phone call, another access procedure is used when using a mobile phone, and a third access procedure is used when trying to page a subscriber. Additional services in the telephone network can be used by dialing a specific key sequence or by pressing a key. The same additional services, such as unconditional call transfer or conditional call transfer, have different key sequences in different networks.

A common feature of all telecommunications networks is to establish a connection between two subscribers. Even if one network (A) cooperates with another network (B) over a port, the different networks are between two terminals in different networks. A connection can be established. On the other hand, no telecommunication network knows why to establish a connection between two terminals. Such knowledge is a matter before network access. Thus, if subscriber X wants to communicate with subscriber Y, and subscriber Y is deployed in a third network C different from A and B, then neither of network A or B The establishment of the connection to the subscriber Y in C) cannot be started.

Subscriber Y, which can be accessed into several different networks, has many possibilities to choose from in the current technology. Typically, subscriber Y does nothing, because subscriber X makes multiple calls within each network that it believes that called party X can find calling party X. Means to navigate. Another possibility for subscriber Y is to control the incoming traffic to the current destination by activating it in the form of redirection or diversion within one or more networks. The following directions and returns are used synonymously.

The mobile telephone network and the standard telephone network cooperate with each other to some extent. A mobile phone owner called from a mobile phone directory number may choose to forward an incoming call in the mobile telephone network to a directory number associated with a fixed telephone in the standard telephone network. Of course, the opposite is also possible. That is, it is also possible to forward an incoming call using the directory number of the fixed telephone as an address to the mobile telephone directory number. However, the two networks, the mobile telephone network and the standard telephone network also provide forwarding services irrespective of each other.

Each individual network registers a place where the called user Y wishes to be reached at that point. If the called user wants to change this transfer in connection with a change in communication conditions, such as when the user leaves home, this is not a simple task, because the user has sent a return ordered in a different network. Because you need to remember.

The network supporting the mobile user provides a fixed network infrastructure including a node where the mobile terminal registers for its existence. The mobile terminal registers its presence in different ways depending on the type of mobile network involved. In a mobile telephone network, the mobile phone itself registers its presence when it has wireless contact with the base station. In a commercial cordless network, registration is made by a portable telephone when the telephone has wireless contact with a fixed base unit. The user is restricted to outgoing calls alone in the telepoint network.

If the mobile terminal has registered its presence with a fixed node in the network, the network registers the node where the mobile terminal is located at that point in time so that the registered data is used as the basis for routing calls to the mobile terminal. The call to the directory number of the mobile terminal is routed to the fixed node to which the mobile terminal was registered at that point, and then the call is returned to the mobile terminal via radio transmission at this node. The current position of the mobile terminal is updated by repeatedly registering the consecutive positions of the terminal as the terminal moves from place to place in the network.

Fixed terminals that can be used by mobile users are an alternative to mobile terminals. In this case, it is necessary to return the directory number of the called user to the physical location of the fixed terminal at which the called user is registered at that time. When a user leaves the fixed terminal, the mobile user is responsible for canceling the pre-registration and registering with the new fixed terminal when changing his geographical location.

The specifications of US Pat. Nos. 4,989,230 and 5,127,042 describe the operation of a mobile cordless telephone as either a circuit for communication with a cordless base station, a circuit for communication with a mobile telephone base station, and a mobile phone, cordless telephone or mobile cordless telephone. A mobile codeless telephone is described that includes a microprocessor programmed to make it work. The latter mode of operation allows the user to conduct two conversations simultaneously, a first conversation with the user over a fixed telephone network and a second conversation with the user over a mobile telephone network. This latter mode of operation may be accompanied by a "Conference Call" supplementary service, which allows all three parties to call together. The user must decide that the cordless telephone has priority over the mobile telephone in both incoming and outgoing calls. This is done by keying in a predetermined number of key sequences on the telephone keypad. Mobile cordless telephones may implement "Call forwarding" and "call waiting" services. If a call is in progress on a cordless phone and an incoming call is detected, only the incoming call can be returned to the mobile phone when the user has previously entered a key sequence corresponding to the call forwarding service in the fixed telephone network. Conversely, if a user wishes to be able to receive a call on a mobile phone and at the same time a call is in progress on a cordless phone, the user must enter a key sequence corresponding to the call return into the mobile phone network.

One disadvantage of this known device is that the user himself has to decide whether to make the call on the cordless phone or the call on the phone. Another disadvantage is that it is the responsibility of the user to handle the necessary call forwarding between the different networks, thus cooperating with each other. The user must employ strict rules to keep an account of the return made in advance and cancel the return under all circumstances in order for the device to function in the required way.

Another disadvantage of the known device is that the cordless portion and the mobile telephone portion are simultaneously activated for communication, resulting in high current consumption.

Detailed description of the invention

The present invention relates to a communication device comprising equipment for communication in a plurality of different telecommunication networks. The invention also relates to a communication method for automatically selecting a telecommunications network most suitable for communication with a communication device at that point when applied to the communication device of the present invention. The invention also relates to a communication device for automatically registering a mobile terminal belonging to the communication device in a network selected by such a device. Such a communication device manages an incoming call using a directory number of a plurality of different networks described above as a destination to a network in which the mobile terminal is registered at that point without the initiative of the user's part. .

The present invention also relates to a communication method and a communication device for coordinating call forwarding services in said plurality of different networks.

The invention also relates to a communication device for providing access to one and the same service in said plurality of different networks in response to user key input in one and the same key sequence.

The present invention also provides a " intelligent " link between the plurality of different communication networks by forwarding a call addressed to a directory address within one of the plurality of networks described above to a network to which the mobile terminal is registered based on preset decision criteria. It relates to a communication device.

According to one preferred embodiment of the invention, the automatic return of the call to the selected network is performed in connection with placing the mobile terminal in a battery charging device for charging the battery of the mobile terminal or removing the mobile terminal from the battery charging device. . This means that the user of the mobile battery needs only to care for the battery of the mobile terminal. In connection with connecting the mobile terminal to the battery charging device or disconnecting the terminal from the device, the necessary registration is automatically made in the respective host network, and the necessary forwarding of the incoming call from the remaining network is performed, In other words, necessary forwarding of the incoming call from all the networks except the registered network is executed. The procedure of placing the mobile terminal in the terminal charging device can be easily done because it knows that the battery needs to be recharged so that the user can use the mobile terminal. Moreover, this is the only procedure the user needs to follow because the remaining registration and call forwarding procedures are initiated automatically in connection with placing the mobile terminal in the battery charging device or removing the terminal from the device. to be.

Features of the invention are described in the claims below.

The present invention is based on the principle of a communication device that determines for itself whether a network is accessible at the time a call is made for traffic origination. The communication device is programmed with a criterion for selecting a network in the case of an outgoing call and a criterion for selecting a terminal in the case of an incoming call.

[Brief Description of Drawings]

1 illustrates a first embodiment of a multi-network terminal in the form of a multi-network telephone.

2 is a schematic block diagram illustrating the multi-network telephone of FIG. 1 provided with a network switching device according to the present invention.

3 is a diagram illustrating a mobile telephone network including multiple fixed networks with codeless access.

4 is a schematic block diagram illustrating a second embodiment of a multi-network terminal including a network switching device according to the present invention.

FIG. 5 is a diagram illustrating a third embodiment of a multi-network terminal using the embodiment shown in FIG. 4.

FIG. 6 is a diagram for explaining a second embodiment of a multi-network terminal using the multi-network telephone described in FIG.

7 is a diagram illustrating a mobile telephone network and a fixed telephone network.

FIG. 8 is a diagram illustrating a modification of the multi-network terminal shown in FIG. 6.

FIG. 9 is a diagram illustrating another modification of the multi-network terminal shown in FIG. 6.

10 is a diagram illustrating a mobile telephone network and a fixed telephone network, and explaining term transfer.

FIG. 11 is a view similar to that shown in FIG. 10.

FIG. 12 is a diagram illustrating a modification of the multi-network terminal illustrated in FIG. 6.

13 is a diagram illustrating a mobile telephone network and a fixed telephone network.

14 is a schematic block diagram illustrating a code conversion circuit for converting the order of DETM-tones.

FIG. 15 is a table used for the code change circuit shown in FIG.

FIG. 16 is a diagram illustrating a fixed local area network (LAN), a mobile wide area network (WAN) having a wide covering area, and multiple terminals for use in these two networks.

FIG. 17 is a diagram illustrating the mobile wide area network and multiple fixed local area networks of FIG. 16.

1 illustrates a first embodiment of a multi-network terminal according to the present invention. The multi-network terminal comprises a portable multi-network telephone 1 for providing communication to both a mobile telephone network and a fixed network with a cordless access point. The multi-network telephone comprises a microphone 2, a loudspeaker 3, a keypad 4, a digit window 5, a multiple antenna 6 for communication in both types of networks and a battery 7. The phone case houses an electronic device that implements circuitry that provides communication in two networks. In particular, the electronic device comprises a first communication device 8 having a mobile telephone function (shown in the block diagram of FIG. 2), a second communication device having a codeless communication function directed to a base unit having a fixed access point to the telephone network ( 9). Some functions may be common to two communication devices. The first device 8 comprises a transmitter and a receiver for communication with a base station in a mobile telephone network. Mobile telephone networks have access to fixed telephone networks. The second device 9 comprises a transmitter and a receiver for communication with a base unit having an access point in the telephone network. An access point can be one of two types, separate or common access point. A common access point is typically a base unit, which is connected to a wireless switchboard (not shown), where other base units are connected in a commercial cordless network. Common access points are common to several different users. The wireless switchboard is connected to the PABX, which is connected to the fixed telephone network. An individual access point is usually a jack to which the base unit of a cordless telephone is connected.

Each of the first and second devices 8, 9 includes respective range control circuits not shown in FIG. 2. Each range control circuit activates a detection circuit 10 which establishes whether the multi-network telephone is located within the range of the base station in the mobile telephone or the base unit in the commercial codeless network. Signals corresponding to one of three possible cases, a connection with a mobile telephone network, a connection with a commercial cordless network, a connection with a mobile telephone network and a commercial cordless network are transmitted to the network switching circuit 11. On the basis of the predetermined decision criteria, the network switching circuit 11 determines which multi-network telephones in the two networks communicate. The network switching circuit 11 controls the switch 12 and activates either the first device 8 or the second device 9 for communication in a mobile telephone network or a commercial cordless network, but not both at the same time. . Since only one of the communication devices 8, 9 is activated for communication, and not both at the same time, the current consumption is kept low to save the battery 7. The detection circuit 10 is connected solely to the range control circuit in the second apparatus 9 or both the range control circuits in the first and second apparatuses 8 and 9 are connected to each base unit in a commercial cordless network and a base station in a mobile telephone network. On detecting that the network switching circuit 11 activates the second communication device 9 for the cordless telephone. When the range control circuit detects that the portable multi-network telephone is solely located within the range of one base station in the mobile telephone network, the network switching circuit 11 activates the first device 8 for the mobile telephone.

In FIG. 2, the second device 9 is shown as activated for communication. The range control circuit of the first device 8 is not activated, but transmits a registration signal to the nearest base station. A user may receive a call and originate a call through codeless access to the telephone network, but may not receive or make a call on the mobile telephone network. If the switch 12 is in the position indicated by the dashed arrow 13, the first device 8 is activated for communication in the mobile telephone network. Thereafter, the second device 9 is deactivated for communication, but continuously transmits a registration signal to the base unit. A user can make a call by receiving a call on a mobile telephone network, but cannot receive or make a call through a codeless access point to the telephone network.

3 illustrates a network environment in which the multi-network telephone of FIG. 1 is used. A number of commercially available cordless networks 14, 15, 16 are shown at the bottom of the figure. Each network includes a plurality of fixed access points 17, and the base unit 18 is disposed at each access point. For simplicity, only one base unit of each network is shown in FIG. 3. The base units are arranged at different locations in the building, for example, together to form a local effective area 19 for the multi-network telephone 1. Each base unit has an effective area 20 of different size for each base unit. For example, the nets 14, 15, 16 may be arranged on each floor of one and the same building. Thereafter, the local effective area 19 resides in the building. Another example is when the networks 14, 15, 16 are arranged in buildings in geographically separated areas, for example, the buildings belong to one and the same company. Thereafter, the local effective area 19 is composed of valid areas in each building.

In the upper part of Fig. 3, a mobile telephone network 21 including a plurality of base stations 22 is shown. Each base station has its own effective area 23. The base stations are distributed over a large geographic area, and the mobile telephone network 21 may be a national or continental effective area.

[REGISTRATION]

In the commercial cordless network 14, 15, 16 the presence of the user is registered when the second device 9 of the multi-network telephone 1 has a wireless connection with one of the fixed base units 18. In particular, the registration signal is received by the base unit. When a user registers himself with a commercial codeless network, he can freely walk in the area covered by the neat network and receive calls and make calls from his multi-network telephone. When a user moves from one commercial codeless network to another, for example from network 14 to network 15, its presence in the new network is a multi-network telephone having a wireless connection with one of the base units 18 of the new network. Is registered by. If this is done, the user can move freely within the effective area of the new network, which area includes the effective area of the base unit 18 belonging to the new network. Thus, there are a number of local effective areas in which the user can move and receive incoming calls with his portable multi-network telephone 1 to make outgoing calls. If the range control circuit of the device 9 detects that the multi-network telephone is located in the effective area of the base unit, and all communication takes place within one of the commercially available cordless networks 14, 15 or 16, the network switching circuit 11 Keeps the second device 9 active for communication. If the detection circuit 10 detects that the second device 9 is no longer connected to the base unit 18, the network switching circuit 11 stops activating the second device 9, and instead Activate the first device 8 for the mobile phone, the switch 12 taking the position shown by the dashed arrow 13. The first device transmits a registration signal regardless of the setting of the switch 12, which signal is received by the base station 22 in the mobile telephone network 21. The user can register with the mobile telephone network in a known manner, and the communication device can move within the effective area 23 of the registered base station 22, and receive a call and make a call. The user can move from the effective area 23 of one base station to the effective area of another base station in a known manner, and the mobile telephone network can automatically handle registration at the new base station. This allows the user to move within the effective area of the mobile telephone network and to receive the call and make the call himself. If the multi-network telephone 1 is located within the effective area of the mobile telephone network, but is located outside the local effective area of the commercial cordless network, all communication takes place via the mobile telephone. Thus, the user does not have to select which network and which device he should use, but one and the same device, i.e. a multi-network telephone, are used for access to both networks. For example, a user equipped with a multi-network telephone can be located in an office building, allowing the user to move locally within the building using a cordless access point as a telephone network within the building. When the user leaves the building and is located outside of the local effective area 19, the multi-network telephone automatically switches to communicate over the mobile telephone network without any manual manipulation by the user.

[DIVERSION]

Fixed telephone networks (not shown earlier) can unconditionally provide access to services such as call transfer, call transfer during call, call waiting, automatic recall, wake-up service, and other services. Some of these services may be implemented within the mobile telephone network 21. However, these services must be activated independently in different networks, i.e. called. According to the present invention, it is possible to handle services in a coordinated way in two networks, fixed telephone networks and mobile telephone networks with the aid of the communication system shown in FIG. According to the invention, if activation of a service in a network requires a procedure with one or more services in another network, this procedure is automatically initiated with the aid of a multi-network terminal.

4 illustrates a second embodiment of the multi-network terminal 25. The multi-network terminal 25 is a conventional portable battery-powered mobile telephone 26 for communication in a mobile telephone network, an incoming line 28 from a fixed telephone network, an outgoing line 28 to a fixed telephone, and an incoming line ( 27) a second outgoing line 29 for connecting additional or auxiliary equipment. Such auxiliary equipment may be telefax equipment, telephone answering machines, additional fixed telephone sets, base units of cordless telephones, computer modems, or many of these equipment and devices. The multi-network terminal 25 includes three main blocks, namely a first functional block 30, a second functional block 31, and a second functional block 32 including a network switching circuit 11 shown in FIG. ). The first functional block 30 handles a function between mobile phones and detects its state. The state of the mobile phone may be a busy state, an unused state, a state in which the phone is placed in the battery-charging device, or a state in which the mobile phone is not arranged in the charging device. The phone can also have other states. The second functional block 31 detects the state of the line by handling the function between the fixed incoming lines, which means that the functional block 31 detects whether the fixed line is in use or not. The third functional block 32, hereinafter referred to as the control unit, controls by coordinating the use of the mobile telephone 26, the fixed telephone, and any auxiliary or additional device that may be connected. The control unit 32 detects the states of the function blocks 30 and 31, detects and handles incoming calls to the blocks 30 and 31, and detects whether the corresponding device is not in use. The control unit 32 also detects when the call has ended. The control unit 32 may also assign outgoing calls to one of the function blocks 30 or 31, which detects that the corresponding device, i.e. mobile or fixed telephone, is not in use. If a call occurs in block 30 or 31, the call switches to a fixed phone or, if available, an auxiliary device. If the mobile phone is placed in the battery charging unit not shown in Fig. 4, the outgoing call can be established through the mobile telephone network or the fixed telephone network. The control unit 32 may select the cheapest network to call for outgoing calls.

If either of the blocks 30 or 31 is in use by the call, the control unit can receive the incoming call or can establish an outgoing call via another "free" block.

FIG. 5 shows a multi-network terminal including the multi-network terminal 25, the mobile telephone 26, the standard fixed telephone 33 and the telefax device 34 shown in FIG. 4. The multi-network terminal 25 is in the shape of a box 35, which uses a functional block 30, 31 and a control unit 32, and a charger 36 for use in charging the battery of the mobile phone 26. Accept. The telephone 26 is inserted into the opening 37 in the charging unit to charge the battery 7. The charging unit 36 is connected to the main network by the main wiring and the network connection 38. The box 34 is planned to be inseparable into two parts, the first part consisting of a battery charging unit 36 and a first function 30 having a telephone function for a mobile phone, the second part being a second part. And third functional units 31 and 32. Line 39 represents the electrical connection between the first and second portions of box 35. The electrical connection 39 corresponds to the bidirectional functional arrow 39 of FIG. 4. Users use mobile phones when they want to move and fixed phones when they are located near fixed phones. After the user moves back to the location of the mobile phone, the user places the mobile phone in the battery charging unit 36. The battery 7 is thus charged and the control unit 32 is activated to initiate two procedures: (1) cancel the activated divert service in the fixed telephone network, and (2) the address of the mobile phone as an address. It is required to forward all incoming calls using the directory number to the directory address of the fixed telephone 33. The control unit 32 initiates the cancellation of any forwarding service previously activated in the fixed telephone network by transmitting a sequence of tone codes through the fixed telephone network, which tone code is a predetermined key sequence on the fixed telephone network. Is equal to the frequency of the tone code generated when the user makes the same cancellation request by key input.

The control unit 32 initiates the return of the incoming call to the fixed telephone 33 to the fixed telephone 33 by transmitting the sequence of tone codes through the mobile telephone network, which keys a predetermined key sequence on the mobile telephone. The input corresponds to the order of tone codes generated when the same return request is made.

The control unit 32 is programmed to initiate two procedures when the mobile telephone is removed from the unit 36: (1) the previously activated forwarding service in the mobile telephone network is canceled, and (2) the address of the fixed telephone is lost. An incoming call indicating the directory number is returned to the directory number of the mobile phone. The cancellation of the service is activated by the control unit 32 which initiates the transmission over the mobile telephone network in the order of the tone codes, which when the user makes the same release request by keying in a predetermined key sequence on the mobile telephone. Matches the order of the tone codes generated in.

The multi-network terminal shown in Fig. 5 functions in this way to coordinate the call forwarding services of the two networks, i.e., the mobile telephone network and the fixed telephone network, and the user has some initiative to activate the call forwarding service within the different networks. There is no need to take action. The control unit 32 records whether the forwarding service is activated so that the two forwarding services are not activated at the same time. When the user is in the vicinity of the multi-network terminal, by arranging the mobile phone 26 in the battery charging unit 36, the user only needs to be interested in a certain battery charging procedure. If this procedure is followed, the call forwarding service is canceled in one of the networks and adjusted to the activation of the call forwarding service in the other of the networks. The opposite is also true.

[Combined Registration and Call Forwarding]

FIG. 6 illustrates a variation of the multi-network terminal shown in FIG. 5. In this case, the fixed telephone 33 has been replaced with a cordless telephone having a base unit 40. The cordless phone is integrated with a mobile phone similar to the embodiment of FIG. The second device 9 of the embodiment of FIG. 2 is replaced by a device for communication with a cordless telephone in the effective area of the base unit 40. This is the second embodiment of the multi-network telephone 1 of FIG. 1 as a result. This second embodiment is referred to by reference numeral 41 and is also referred to as a multi-network telephone. As shown, the multi-network telephone 41 has an antenna 42 for communication in a mobile telephone network and an antenna 43 for communication between the base unit 40 and a cordless telephone. The base unit 40 has one antenna 44. In practice, the antennas 42 and 43 of the multi-network telephone 41 can be integrated to form one single antenna. An electrical connection 35 for making electrical signals relating to voice, signal transmission information, status information between the first functional block and the control unit 32 is connected wirelessly, i.e. between the cordless telephone portion and its base unit 40 The embodiment shown in FIG. 6 differs from the embodiment shown in FIG. 5 in that it is replaced with. In this case, the first functional block 30 is not contained in a box accommodating the battery charging unit, but is stored in the base unit 40. The description of the various traffic events that may occur is made below in connection with the description of FIGS. 10-12.

FIG. 7 illustrates an environment for the multi-network terminal shown in FIG. 6. 7 also shows a mobile telephone network 21 and a fixed telephone network 45. The mobile telephone network is connected to a fixed telephone network through a mobile telephone exchange called a mobile switching center (MSC). This connection is symbolically represented by a double arrow 46. A foreign user located on the left side of the vertical line 47 has access to the mobile telephone network through the mobile telephone 48 and has access as a fixed telephone network through the fixed telephone 49. The called party, hereinafter referred to as the local party, is located on the right side of the vertical line 47 and is equipped with the multi-network terminal of FIG. It is assumed below that the local party walks in the environment and can be contacted via either the first communication device 8 for mobile telephony communication or the second communication device 9 for cordless telephony communication. In this latter case, it is assumed that the local party is in the area covered by the base unit 40. When a non-local user calls a local party by giving the local party's directory address in the mobile telephone network, the local party receives the call on the mobile telephone of the multi-network telephone when the telephone is located within the range covered by the mobile telephone network. The detection circuit 10 detects that the range control circuit in the second communication device 9 for cordless telephones indicates that the local party is located within the effective range of the base unit 40. The detection circuit 10 detects that both control circuits indicate the presence in each effective area, or only the range control for the second communication device 9 is such that the multi-network telephone is located in the effective area of the base unit 40. All calls are received by the local party to the cordless telephone portion of the multi-network telephone when it is indicated. A user outside a specific area can contact the local party by calling the local party, giving the directory address of the fixed telephone of the local party to the line 28 to which the base station 40 is connected. As a result of this forwarding, the local party can receive the call in the mobile phone portion or the cordless portion as indicated by the range control circuitry.

8 illustrates a modification of the multi-network terminal of FIG. 6. 8 shows a number of battery power unit 36 located within the range of the cordless portion of the multi-network telephone 41. Similar to the embodiment of FIG. 6, a first functional block 30 that handles the function to a multi-network telephone is embedded in the base unit 40. Thus, all battery charging units 36 function only as battery chargers. The user may place the telephone 41 in any charger 36 and receive a call from a user outside the specific area, or the charging unit 36 in which the telephone 41 is placed for recharging at that point. Can be called at This increases the likelihood that a user outside of a particular region can contact a local user.

9 illustrates another variation of the multi-network terminal shown in FIG. 6. 9 shows a cordless telephone 50 associated with the base unit 51 connected to the lead wire 29 of the accessory. The figure also shows a number of battery charging units 36. Cordless telephone 50 may be located in any charger 36. However, the cordless telephone 50 is assumed to be used with the battery charging unit 36 disposed within the effective range of the base unit 51. The multi-network telephone 41 functions as a cordless telephone when it is located within the effective range of the base unit 40. The cordless telephone 50 functions as a standard telephone when it is located within the effective range of the base unit 51. These effective ranges do not need to overlap each other. By inserting the cordless telephone 50, even if the user is located outside the effective range of the base unit 40 in the multi-terminal 26, the user can be contacted by the incoming call and can make the outgoing call on his own.

[Call back]

The forwarding function and the various traffic events that may occur when such a service is available in both the mobile telephone network 21 and the fixed telephone network 45 are now described. This description is made with respect to the multi-network terminal shown in FIG. 5 and is also applicable to the embodiments described in FIGS. 6, 8 and 9. When the local party is walking in the environment and is located some distance from the multi-network terminal 25 of FIG. 5 or within the range of the base unit 40 of FIGS. 6, 8 and 9, the mobile phone directory The incoming call numbering is sent through the mobile telephone network 21 and received by the mobile telephone 26. The incoming call directed to the directory address of the fixed telephone 33 is indicated by a dotted line 52. Switched to the mobile telephone network 21, and is returned to the mobile telephone 26 through the mobile telephone network 21. This call transfer is activated when the mobile phone 26 is removed from its battery charging unit 36 or the multi-network telephone 41 pulls out a wireless connection with its base unit 40. As shown in Fig. 10, if a local party roams on foot, he can only use a mobile phone for outgoing calls for obvious reasons.

11 shows traffic events that occur when a local party is located in the vicinity of the multi-network terminal 5 or has a wireless connection with its base unit 40 of the cordless portion 9 of the multi-network telephone 41. . A user outside the specific area who calls the local party on the directory address to the fixed telephone 33 is connected through the fixed telephone network as shown by the solid line in FIG. A user outside of a particular area calling the local party using the local party's mobile phone directory number is returned to the fixed telephone network, as shown by dotted line 53. The call is then forwarded to the local party's phone 33 via the fixed telephone network. Such call forwarding is carried out when the mobile telephone @ 6 is located in the battery charging unit 36 or when the cordless portion 9 of the multi-network telephone 41 has a wireless connection with the base 40. If the local party wants to make an outgoing call, the user uses a fixed telephone 33. If the fixed phone is busy, the local party may place an outgoing call on mobile phone 26 when the mobile phone is not in use or absent.

The fixed state is described above with regard to specific traffic cases. Now, the transition between the two fixed states will be described. Suppose that a local party is located near the multi-network terminal of FIG. 5, away from such a terminal, and "moved" to have a mobile phone 26 or a multi-network phone 41. Since the mobile phone has been removed from the battery charging unit, the range control indicates that the multi-network telephone 41 is no longer connected with its base unit, and the switching unit 53 of the mobile phone in Fig. 11 becomes invalid, and Fig. 10 Indicates that the switching unit 52 of the fixed telephone 33 is activated. The out-of-area caller calling on the directory number of the fixed telephone 33 causes his call to be directed to the mobile telephone network in the manner indicated by the dashed line 52 in FIG. The second type of transition that may occur is when the local party changes from a moving state to a stationary or fixed state, for example, when entering the room where the multi-network terminal of FIG. 5 is located. In this case, the switching unit 53 of the mobile telephone 26 is activated, and the switching unit 52 of the fixed telephone is canceled. Thus, the mobile call is received on the fixed telephone 33, and the switching of the previously activated fixed telephone is canceled. The variation of the traffic case of FIG. 11 depends on whether the multi-network terminal is located in the home of the local party or in the workplace of the party. If multiple terminals are located in the home of the local party, the network service "call forwarding on no reply" is not activated until after a preset number of call signals and the fixed telephone is not answered. The call is then returned from the fixed telephone to the mobile telephone network. This allows members of the family to receive the call. Members of the family can also use fixed phones in the usual way. Thus, the user can access a separate telephone at his workplace and a public telephone at his home. On the other hand, if the multi-network terminal is located at the local party's workplace, the return is automatically performed when the mobile phone or multi-network telephone 41 is removed from its battery charging unit or disconnected from its base unit. Is activated. To allow the same multi-network terminal to be used in both cases, the cordless portion 9 of the fixed telephone 33 or the multi-network telephone 41 has a switch for determining whether call forwarding to the mobile telephone network is automatically activated. May be provided.

FIG. 12 is another modification of the multi-network terminal shown in FIG. 6. The embodiment shown in FIG. 12 is similar to the embodiment shown in FIG. 6 except that the fixed telephone 33 is connected in series with the base unit 40 by a fixed line 54. The fixed telephone 33 and the base unit 40 are connected in series with each other. The embodiment shown in FIG. 10 allows a local user to choose to make a call on a mobile or fixed phone. This selection is described in FIG. 13. In FIG. 13, it is assumed that the detection circuit 10 detects that the range control circuit exists in both the mobile telephone network and the effective range of the base unit 40. FIG. In other words, the local party is located in the vicinity of the multi-network terminal of FIG. Outgoing calls can then be made via the cordless portion of the multi-network telephone 1 or the fixed telephone 33. This is indicated by the solid line at the bottom of FIG. If the detecting circuit 10 detects that only the range control circuit in the first communication device 8 indicates the presence in the mobile telephone network, the control unit 32 activates the first communication device 8 for communication in the mobile telephone network. The outgoing call is made through this network as shown by the dashed line at the top of FIG. In the case of outgoing calls, a complicated condition occurs when the fixed telephone 33 is used, for example by a member of the family, when the user wishes to make an outgoing call. This complicated problem is solved by the user lifting the multi-network telephone 41 from the battery charging unit to make outgoing calls on the mobile telephone. This is indicated by the dotted line at the top of FIG.

Fig. 14 shows a circuit included in the multi-network telephone 1, 41, which provides access to one and the same service in a mobile telephone network and a fixed telephone network by keying in one and the same key sequence. 14 shows a keypad 55 with individual keys connected to the keypad reader 56. Keypad decoder 56 includes logic and counters, encoders, D / A converters, and oscillators. When a key or button is pressed, the keypad reader forms a matrix address for the selected key. Counters and decoders use these addresses to select unique frequencies based on oscillator frequencies. The matrix encoder generates a digital word with the required frequency, and individual matrix D / A converters convert the digital word to the corresponding voltage level. These synthesized tones are mixed together in the operational amplifier, and the desired output signal consisting of two tones is obtained at the output of the keypad decoder 56, which is passed to the network switching circuit 11. The network switching circuit 11 is directly connected to the second communication device 9 and connected to the first communication device 8 for communication in the mobile telephone network through a code conversion circuit 57. The code conversion circuit 57 converts the tone sequence into a service tone sequence and a new tone sequence compatible with the telephone number in the mobile telephone network. This sign conversion is done with the help of a data table stored in a memory (not shown) in the sign conversion circuit 57. The first memory area 58 includes a first table A for tone codes corresponding to services available in a fixed telephone network, while the other memory area 59 corresponds to tone codes corresponding to the same service in a mobile telephone network. It includes. Similarly, the same service can be activated in the same key sequence as used to activate the service in the fixed network, even in fixed and mobile telephone networks. Thus, the user does not need to be interested in making outgoing calls on any network because the portable device makes the selection automatically and does not have to remember different key sequences for the same service on different networks, This is because the key sequence for only one network needs to be recalled. To supplement, since the mobile telephone network requires a designated trunk number when making a local call, the code conversion circuit 57 can be configured to add a region code number to an area or region where a multi-network telephone is normally used.

FIG. 16 shows a local area network 60 (LAN) to which a plurality of mobile multiple terminals 61 are connected, which can communicate with each other via a coaxial cable 62. For convenience, only one multi-terminal is shown connected to the local terminal. The multiple terminals 61 can also communicate with the mobile wide area network 63 (WAN), which has a wide range of valid areas as wireless. Each multi-terminal 61 is a first communication device for communication in the network 63 as symbolically indicated by the first antenna 64 and a local area network as symbolically indicated by the second antenna 65. At 60, a computer having a second communication device for communication is included. The first communication device 64 includes known wireless communication hardware and software, such as equipment used for communication in a mobitex network. The second communication device 65 comprises known equipment for data transmission to the base unit 6 connected to one of a plurality of access points 67 common to the local area network 62 via wireless, infrared or ultrasound. . Unlike the local area network 60, the multi-terminal 61 has codeless access, and the user of the multi-terminal is a local effective area indicated as area 68 for all base units 66 connected to the local area network 60. You can move around freely. In this regard, local area network 60 corresponds to a commercial-codeless network in the telephony system. Each multi-terminal 61 also has a first detection device similar to the detection circuit 10 of FIG. 2 to detect multiple states of the first communication device and to transmit an electrical signal corresponding to the state to the multi-terminal 61. And to a network switching circuit (not shown) corresponding to the network switching circuit 11 of FIG.

Each multiple terminal 61 also includes a second detection device, which functions to detect a plurality of states of the second communication device, and transmits an electrical signal corresponding to the state to the network switching circuit. The network switching circuit (not shown), the detection circuit (not shown) and the first and second communication devices 64 and 65 in the multiple terminals correspond to the units 11, 10, 9 and 8 of FIG. Connected to each other, and have a corresponding function. The network switching circuit, not shown in the figure, is intended to activate a second communication device that depends on whether the multiple terminals 61 are located within the local coverage area 68. In all other cases, the network switching circuitry is intended to activate the first communication device for communication to the mobile wide area network 63. The mobile data network includes a number of nodes 69 to which other multiple terminals 70 are connected via a wireless connection. Only one such connection is shown for simplicity reasons. Although not required, such multiple terminals 70 may be connected to other local area networks 71 through codeless access in the same manner as multiple terminals 61.

FIG. 17 can be connected to one of a plurality of local area networks 62 and when the multi-terminal 61 is moved away from the local effective area of such a network, the first communication device may automatically move to a mobile wide area network without operation of the user portion. 63) to establish a connection with it. Thus, for example, when a user turns on his multi-terminal at his workplace in the morning, the user may log in his multi-terminal at the local area network. The user can work with the computer, take the computer with him while moving the room, and the computer is constantly logged into the local area network 62. Then, when the user leaves the building, for example, sits in his car, the detection circuit detects that the multi-terminal has lost connection with the local area network 62. The network switching circuitry activates the first communication device, and the multi-terminal 61 now connects with the mobile wide area network 63. Thus, the mobile wide area network functions as the background network for the fixed local area network 60 in the same way that the mobile telephone network 21 of FIG. 3 serves as the background network for the fixed network 15, 16 or 17.

Claims (7)

A plurality of different telecommunication networks and multiple network terminals provided for communication within the plurality of telecommunication networks, wherein the multi-network terminals monitor the telecommunication networks to detect the telecommunication networks currently accessed by the terminals. In the multi-network communication method for telecommunications, Dynamically selecting an accessible network on which the multi-network terminal communicates based on a currently accessible telecommunication network; When the multi-network terminal changes the communication network, it starts to cancel any forwarding service previously activated in the selected network, and activates the forwarding service in coordination with the cancellation step in each remaining non-selected network. Wherein the incoming call of the non-selected network, the incoming call with the multi-network terminal as a destination, is directed from the selected network to the multi-network terminal. 2. The mobile terminal of claim 1, wherein the multi-network terminal includes a portable device and a stationary telephone device provided with hardware and functionality for causing the portable device to operate as a mobile phone, wherein the multi-network terminal inserts the portable device into a battery charging unit. And initiating the forwarding in a currently accessible network upon removing the portable device from the battery charging unit. The portable terminal of claim 2, wherein the multi-network terminal includes a portable device provided with hardware and functionality for allowing the portable device to operate as a mobile phone and a cordless phone, wherein the multi-network terminal inserts the portable device into a battery charging unit, Initiating the forwarding in a currently accessible network upon removing the portable device from the battery charging unit. 4. The method of claim 3, wherein the portable device initiates the forwarding when the cordless telephone is out of the effective range by a base station of the cordless telephone. 2. The method of claim 1, wherein the multi-network terminal initiates the forwarding by establishing an outgoing connection in the selected network. 2. The method of claim 1, wherein the multi-network terminal initiates the forwarding by establishing an outgoing connection in any of the selected networks. 2. The terminal of claim 1, wherein the multi-network terminal comprises a computer provided with a first communication device for communication in a local area network and a second communication device for communication in a wide area network, wherein the multi-network terminal is connected to a base station of the first communication device. And the forwarding is initiated when it is out of the effective range.